Oslo - Norwegian Princess Martha Louise, daughter to King Harald and Queen Sonja, gave birth Monday to her third child, a daughter.

The mother and newborn baby were doing well, the palace said, adding that the newborn baby weighed 3.7 kilograms and measured 53 centimetres long at birth.

The king has notified the speaker of parliament that the baby was to be named Emma Tallulah Behn.

The baby was born at 12:53 at the home the princess shares with her husband, writer Ari Behn near Oslo, the palace said.

The couple were married in 2002.

The princess, 37, has published several books, some for children, under her own name.

The couple also have two daughters: Maud Angelica, 5, and 3-year- old Leah Isadora.

The princess's daughters have no royal titles, and her brother Crown Prince Haakon is first in line to the throne.

The princess is a qualified physiotherapist and a former member of the Norwegian showjumping team. (dpa)